Every licensed physician and surgeon or other person engaged in prenatal care of a pregnant woman, or attending the woman at the time of delivery, shall obtain or cause to be obtained a blood specimen of the woman at the time of the first professional visit or within 10 days thereafter.
Source:
Section 120685, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=120685..